Finding the Fourth Proportional to 77,660.40, 107,213.04 and 52,207.68
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Solution
The fourth proportional to 77,660.40, 107,213.04 and 52,207.68 is: 72,074.62
Step by Step Solution
- Step 1: Write the proportion equation
77,660.40 : 107,213.04 = 52,207.68 : x - Step 2: Convert to fraction form
77,660.40/107,213.04 = 52,207.68/x - Step 3: Cross multiply
77,660.40x = 107,213.04 × 52,207.68 - Step 4: Simplify right side
77,660.40x = 5,597,344,084.15 - Step 5: Solve for x
x = 5,597,344,084.15/77,660.40 - Step 6: Final answer
x = 72,074.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.